Yamaha DT125R '01 - Running Project
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Prototype V4, 3D printed in a TPU at 80A Shore Hardness like the original. This is chemical and UV resistant filament and it's rather tough!
This is the final design for use with a pressure mold.
Concessions need to be made for 3D printing rubber unfortunately, so now I'm using M5 Socket cap bolts and the original flange that's molded in the Airbox as a sealing face, it actually works out to be the most effective alternative. Much like a YZ Airbox will use the same design.
The Airbox is so important when jetting a 2stroke road bike, we need to control the flow of air and have a place to store some also! Induction theory carries on. The area inside is free of interruption and the boot helps to increase the velocity upon entering the carb. I'm hoping to gain more torque down low by using that stock Airbox volume.
The design now minimises any angles greater than 55deg, this means material does not have to be supported as we print. As you can see, this is the optimal version as the rest of the print can completed cleanly as a vertical slice.
Job done,
So much more flexibility with jetting. Measure 69 times, draw it once.
Mikuni TM34ss finally finished.
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Exhaust Porn
This was the last one ever left, I finally bit the bullet and purchased a Stainless exhaust for the DT.
This came all the way from bloody Portugal like this
Great job lads.
Ballin' - This is the 'YAMAHA DT125 Special Exhaust' in STAINLESS DTX DTR-E with end can from Romeu125 an eBay seller.
Custom design by the gang over there and beautifully hand made.Really quite impressed, only ever 4 sold on eBay.
Looks great, low slung - Interesting design. I've got to say, did not fit that well with the tail pipe supplied. It was so awkward in fact I decided to fit my WR200 FMF tail pipe DIY instead.
Looks cool, but too raspy for my taste.
Picked up maybe the last NOS WR200 Mikuni Idle screw ever? This stuff is all getting expensive and stupidly hard to come by these days...Airbox
Next up, finishing up the Airbox. Drilled and bolted up with M5 bolts and importantly using Nylocs. Can't have the ingestion of M5 bolts into the crankcase.
Got it bang on with a perfect seal, sadly it's no going back with the install but that's the best that can be achieved SLA 3D printing.
WR200 SideStand - 1991-1993
The early versions of the WR200 came with a long enduro style kickstand. Almost impossible to find nowadays and I'm kicking myself for not getting one NOS from Fowlers back in the day, but I was a student at the time.
Due to the design you need to notch the DTR frame, so 'sayonara' fresh powdercoat here and sent it with the Grinder. It looks like I've cut to far there, but it's just swarf.
Again, NO GOING BACK.
The WR200 sidestand looks mint, tucks up nicely and props the bike up much further if you run an increased ride height over standard on the DTR.
(New longer spring needed)
FINAL FORM
I'm running DT230 Lanza Frame Guards, Left handside here is a ZETA part. Otherside is an OEM Lanza Part which only fits right handside for the DTR and require spacers and machining to fit the DTR. But worth it.
HOT BOI
Such an odd Croissant that pipe....,
I think that's it for the DTR, It's a beast, sounds great and is still alot of fun 7 years on. But it's had it’s day.
Is it better? All I'm certain is that it's mine.
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@Darty what ignitec cdi did you go for?? Ive sent an email and they have recommended the DCCDIP1 race
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@finchfocker I myself just bought the DCCDIP1 race. Seems like a great unit, just programmed myself a ignition map to start off with, hopefully I'll get a chance to plug her in soon!
Perfect then!
Maybe I should get some Chinesium ones 
